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Finding the Fourth Proportional to 49,203.84, 73,748.04 and 21,139.08

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Solution

The fourth proportional to 49,203.84, 73,748.04 and 21,139.08 is: 31,683.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,203.84 : 73,748.04 = 21,139.08 : x
  2. Step 2: Convert to fraction form
    49,203.84/73,748.04 = 21,139.08/x
  3. Step 3: Cross multiply
    49,203.84x = 73,748.04 × 21,139.08
  4. Step 4: Simplify right side
    49,203.84x = 1,558,965,717.40
  5. Step 5: Solve for x
    x = 1,558,965,717.40/49,203.84
  6. Step 6: Final answer
    x = 31,683.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.